Optimised memset64/memset32 for powerpc

[Benjamin Herrenschmidt]

On Tue, 2017-03-21 at 06:29 -0700, Matthew Wilcox wrote:
> 
> Well, those are the generic versions in the first patch:
> 
> http://git.infradead.org/users/willy/linux-dax.git/commitdiff/538b977
> 6ac925199969bd5af4e994da776d461e7
> 
> so if those are good enough for you guys, there's no need for you to
> do anything.
> 
> Thanks for your time!

I suspect on ppc64 we can do much better, if anything moving 64-bit at
a time. Matthew, what are the main use cases of these ?

Cheers,
Ben.